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Inkjet printhead and process for producing the same

a technology applied in the field of inkjet printhead and process for producing the same, can solve the problems of satellite droplets forming on the printhead of top-shooter design, and achieve the effect of increasing the frequency response of the inkjet printhead

Inactive Publication Date: 2006-12-07
IND TECH RES INST
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Benefits of technology

The present invention provides an inkjet printhead with an improved frequency response. This is achieved by adding an auxiliary actuator to the printhead, which can deform to push ink from a nozzle. The design of the auxiliary actuator can be applied to both top-shooter and side-shooter printheads. Additionally, the invention provides a method for making the inkjet printhead using a single wafer bonding technique. The operating method includes deforming the auxiliary actuator to refill the chamber with ink and deforming the main actuator to push the ink from the nozzle. The technical effects of the invention include increased frequency response, improved positioning precision, and enhanced structure rigidity.

Problems solved by technology

In addition, the printhead of top-shooter design will suffer the emergence of satellite droplets.

Method used

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  • Inkjet printhead and process for producing the same
  • Inkjet printhead and process for producing the same
  • Inkjet printhead and process for producing the same

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Embodiment Construction

[0021] For your esteemed members of reviewing committee to further understand and recognize the fulfilled functions and structural characteristics of the invention, several preferable embodiments cooperating with detailed description are presented as the following.

[0022] Both the electrostatic inkjet printhead and piezoelectric inkjet printhead have the shortcoming that while the ink in the chamber is being ejected from the printhead, it is also being pushed to flow back to the ink reservoir, and the backward flow ink will affect the refill speed of the chamber since it is blocking the way for the ink to refill the chamber. Therefore, the inkjet printhead of the invention has at least one auxiliary actuator in addition to the main actuator for preventing the ink to be push back to the ink reservoir such that has a better response frequency.

[0023] Although most of the inkjet printhead illustrated in the preferred embodiment of the invention is the electrostatic inkjet printhead, th...

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PUM

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Abstract

An inkjet printhead and process for producing the same, having at least an auxiliary actuator being added in the inkjet printhead structure, is able to increase the frequency response thereof and to increase the positioning precision and structure rigidity of the inkjet printhead by using a single wafer bonding step in the process of producing the same.

Description

1. FIELD OF THE INVENTION [0001] The present invention relates to an inkjet printhead and process for producing the same, and more particularly, to an inkjet printhead with auxiliary actuator and process of making the same. 2. BACKGROUND OF THE INVENTION [0002] Generally, there are three liquid droplet injection designs capable of ejecting liquid droplet with uniform droplet size, which are thermal bubble inkjet printhead, electrostatic inkjet printhead and piezoelectric inkjet printhead. The present invention will focus on the electrostatic inkjet printhead and piezoelectric inkjet printhead that have the ability to eject liquid droplet without using a thermally driven bubble. [0003] Refer to FIGS. 1A, 1B and 1C, which are schematic diagrams showing successive actions of an electrostatic inkjet printhead of side-shooter design. The printhead 100 adopts the side-shooter design in which the nozzle 110 of the printhead 100 being disposed between substrate 120 and substrate 130 is arra...

Claims

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Application Information

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Patent Type & Authority Applications(United States)
IPC IPC(8): B41J2/06
CPCB41J2/14201B41J2/14314B41J2/16B41J2/1607B41J2002/14411B41J2/1628B41J2/1629B41J2/1639B41J2/1623
Inventor FANG, YU-JENWANG, CHIN-HORNG
Owner IND TECH RES INST